Epistrophe

Vockeroth J. R., 1973, Some New or uncommon Syrphini (Diptera: Syrphidae) from Southern Africa, Annals Natal Mus. 21.3.595 - 607. pdf 21 (3), pp. 595-607 : 598

Epistrophe

,

the

two

genera

which

run

to

the

first

half

of

this

couplet

,

but

the

species

of

these

genera

have

the

face

mostly

or

entirely

yellow

instead

of

entirely

black

,

and

neither

genus

is

known

to

occur

in

the

Ethiopian

Region

.

In

the

key

to

genera

of

the

Ethiopian

Region

(

p

.

48

)

it

runs

to

couplet

7

;

again

it

agrees

with

neither

alternative

as

it

has

the

eye

bare

and

the

hind

coxa

with

a

tuft

of

hairs

at

the

posteromedian

apical

angle

.

In

the

key

based

on

male

terminalia

(

p

.

50

)

it

runs

to

couplet

27

but

differs

from

the

other

genera

which

run

there

in

having

the

aedeagus

one-segmented

rather

than

divided

into

distinct

basal

and

distal

portions